Long time lurker, first time poster. I'm UK based and looking for your advice on my next bike purchase. Currently riding a second-hand Planet X carbon with old 105/Ultegra and Mavic Ksyriums.

The bike is a bit tired and more concerningly, it it's starting to creak around the BB when I put the power down or on climbs, so am looking to get a new steed and finding every excuse to purchase!

I've narrowed it down to 2012 CAAD10 105 or 2012 Super Six 105 - the main thing that is swaying it is the price difference:

- I've found the CAAD10 105 with RS10s for £1000- also found the Super Six 105 with Aksiums for £1400

Me:

- just getting into road cycling past 4 months, previously more MTBing- prefer to do shorter ie 30 mile rides once/twice during the week with a longer 50-60 miles at the weekend, so roughly three times out per week- I'm signed up to do a 50 miles sportive, then another 80 mile sportive- overall want a bike to do improve fitness/do fast short rides with occasional longer one- might possibly look at getting into road racing next year

Originally it was Super Six all the way, but I'm currently swayed toward the CAAD as it's £400 cheaper, which could go towards upgrades. I would sell the RS10s and keep my Mavics and sell the Gossamer chainset as I also have an FSA SLK Light chainset to go on the new bike. I'd look to upgrade 105 kit later on. If I went Super Six, I'd do the same and sell the wheels/cranks.

So what would you do? With the CAAD, I'm already £400 up for upgrades, but realise there's not a lot in it between the two frames (apart from alu v carbon debate).....

Any advice appreciated guys and have been lusting after the CAAD build thread.

I also have a caad9 105 I ride all through the winter and to work! So I own basically the two bikes your looking at. Caad9 is similar to caad10, only heavier. Caad9 frame is 1400g caad10 is 1100g.

Supersix frame is 1100g so basically the two frames you are buying are the same weight, so from a WW point of view buy which ever you want.

They are both very very stiff in the BB area. Both go round corners like they are on rails, much better than a madone 5.2 (I've owned one) better than synapse carbon (I've owned one).

I love them both I love the caad9 being the last of the built in America, last of the smooth welds. Liquigas replica also helps prevent getting mown down on the way to work! Haha

But; there is no question that the supersix is a more comfortable bike, it transmits less to arse and wrists. I'd love to say the difference however is slight, but I'm afraid it's not, it is noticeable.

However, if shorter rides is where you are most of the time and you are looking at a price difference of +40%!!!!! And that spare cash could be pumped into the spec from the off, then the caad10 is very tempting!!!

Check my weight breakdowns from my build. I took off almost every part from my supersix from new, and it's scary just how heavy some of those parts are!!!! You could drop a lot of weight from a caad10 105 with £400 if your organised!

Keep us updated please (oh and go on, get the liquigas replica colours......)

Your too kind, to be fair the WW team here did the hard work, and some keen looking on eBay for bits over many months.

The real shame would be to see either SS or caad10 ridden through our winters...

The £400 saved by going caad10 could get you a 2nd hand caad8 for winter duties.....

Then pimp up the caad10 through the winter as I did with my SS.....

Not at all convinced by carbon seatposts regarding comfort. I run an fizik Aliante on both my bikes, spent ages getting the setup just right and identical on both. The r-SYS I run are famous for have a smooth ride quality, £400 would go along way to a lightly used set... I think those and the right saddle ll do a lot more than a seatpost. But do change e seatpost, for weight reasons. As the standard cannondale one is criminally heavy!!!

there was a comparison in a recent magazine showing the measured "give" of various carbon seatposts...but i can't remember which magazine. my main takeway was that a setback post was much more likely to be comfy.

The article was in Velo 2-3 months back. Setback v. straight post is all about fit and not stiffness, however. Setback changes effective seat tube angle by a couple of degrees. Most frames are designed with this in mind so that a mild setback post is appropriate if it's a well-fitting frame. Straight posts came out of the MTB world and are seen more often on the road these days to accommodate the compromised S/M/L/XL sizing that is common in the carbon age. The added stiffness is true, but parenthetical to fit.

You should try a syntace P6, night and day difference between most seatposts I've tried, completely transformed my winter trainer from something that beats me up on rough roads to something that glides over them... The new Hi-Flex is supposed to be even more comfortable... If I could find one cheaply I'd definitely snap it up

I'm probably going to get murdered by all the "crank'n'fail" fans on this forum... But why not consider something else? I'm sure there are plenty of other nice bikes out there... like giants If it was out of those two I'd toss a coin, can't go wrong with either one

I found the Supersix to be a very stiff uncomfortable bike. I sold mine and find my alu Principia to be more comfortable. The Supersix is nice but I think I may be tempted to get the Caad10 rather. Its a lovely frame that you dont have to worry about dropping. The walls on the Supersix seem very thin as well.

The SuperSix is a very well thought-out frame. It is very stiff, though. I can see why other posters have not liked it due to the harsh ride. It was designed for racing, and it shows in the bottom bracket and headtube stiffness (as stiff as any in my collection).

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